mkdocs-material/material/assets/javascripts/worker/search.3bc815f0.min.js

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/*!
 * escape-html
 * Copyright(c) 2012-2013 TJ Holowaychuk
 * Copyright(c) 2015 Andreas Lubbe
 * Copyright(c) 2015 Tiancheng "Timothy" Gu
 * MIT Licensed
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/**
 * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.3.8
 * Copyright (C) 2019 Oliver Nightingale
 * @license MIT
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 * Copyright (C) 2019 Oliver Nightingale
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/*!
 * lunr.stemmer
 * Copyright (C) 2019 Oliver Nightingale
 * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt
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/*!
 * lunr.stopWordFilter
 * Copyright (C) 2019 Oliver Nightingale
 */,I.generateStopWordFilter=function(e){var t=e.reduce((function(e,t){return e[t]=t,e}),{});return function(e){if(e&&t[e.toString()]!==e.toString())return e}},I.stopWordFilter=I.generateStopWordFilter(["a","able","about","across","after","all","almost","also","am","among","an","and","any","are","as","at","be","because","been","but","by","can","cannot","could","dear","did","do","does","either","else","ever","every","for","from","get","got","had","has","have","he","her","hers","him","his","how","however","i","if","in","into","is","it","its","just","least","let","like","likely","may","me","might","most","must","my","neither","no","nor","not","of","off","often","on","only","or","other","our","own","rather","said","say","says","she","should","since","so","some","than","that","the","their","them","then","there","these","they","this","tis","to","too","twas","us","wants","was","we","were","what","when","where","which","while","who","whom","why","will","with","would","yet","you","your"]),I.Pipeline.registerFunction(I.stopWordFilter,"stopWordFilter")
/*!
 * lunr.trimmer
 * Copyright (C) 2019 Oliver Nightingale
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/*!
 * lunr.TokenSet
 * Copyright (C) 2019 Oliver Nightingale
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/*!
 * lunr.Index
 * Copyright (C) 2019 Oliver Nightingale
 */,I.Index=function(e){this.invertedIndex=e.invertedIndex,this.fieldVectors=e.fieldVectors,this.tokenSet=e.tokenSet,this.fields=e.fields,this.pipeline=e.pipeline},I.Index.prototype.search=function(e){return this.query((function(t){new I.QueryParser(e,t).parse()}))},I.Index.prototype.query=function(e){for(var t=new I.Query(this.fields),r=Object.create(null),n=Object.create(null),i=Object.create(null),s=Object.create(null),o=Object.create(null),a=0;a<this.fields.length;a++)n[this.fields[a]]=new I.Vector;e.call(t,t);for(a=0;a<t.clauses.length;a++){var u=t.clauses[a],l=null,c=I.Set.complete;l=u.usePipeline?this.pipeline.runString(u.term,{fields:u.fields}):[u.term];for(var h=0;h<l.length;h++){var d=l[h];u.term=d;var f=I.TokenSet.fromClause(u),p=this.tokenSet.intersect(f).toArray();if(0===p.length&&u.presence===I.Query.presence.REQUIRED){for(var y=0;y<u.fields.length;y++){s[j=u.fields[y]]=I.Set.empty}break}for(var m=0;m<p.length;m++){var g=p[m],x=this.invertedIndex[g],v=x._index;for(y=0;y<u.fields.length;y++){var w=x[j=u.fields[y]],Q=Object.keys(w),b=g+"/"+j,S=new I.Set(Q);if(u.presence==I.Query.presence.REQUIRED&&(c=c.union(S),void 0===s[j]&&(s[j]=I.Set.complete)),u.presence!=I.Query.presence.PROHIBITED){if(n[j].upsert(v,u.boost,(function(e,t){return e+t})),!i[b]){for(var E=0;E<Q.length;E++){var k,L=Q[E],P=new I.FieldRef(L,j),T=w[L];void 0===(k=r[P])?r[P]=new I.MatchData(g,j,T):k.add(g,j,T)}i[b]=!0}}else void 0===o[j]&&(o[j]=I.Set.empty),o[j]=o[j].union(S)}}}if(u.presence===I.Query.presence.REQUIRED)for(y=0;y<u.fields.length;y++){s[j=u.fields[y]]=s[j].intersect(c)}}var O=I.Set.complete,R=I.Set.empty;for(a=0;a<this.fields.length;a++){var j;s[j=this.fields[a]]&&(O=O.intersect(s[j])),o[j]&&(R=R.union(o[j]))}var F=Object.keys(r),C=[],_=Object.create(null);if(t.isNegated()){F=Object.keys(this.fieldVectors);for(a=0;a<F.length;a++){P=F[a];var N=I.FieldRef.fromString(P);r[P]=new I.MatchData}}for(a=0;a<F.length;a++){var D=(N=I.FieldRef.fromString(F[a])).docRef;if(O.contains(D)&&!R.contains(D)){var A,B=this.fieldVectors[N],V=n[N.fieldName].similarity(B);if(void 0!==(A=_[D]))A.score+=V,A.matchData.combine(r[N]);else{var z={ref:D,score:V,matchData:r[N]};_[D]=z,C.push(z)}}}return C.sort((function(e,t){return t.score-e.score}))},I.Index.prototype.toJSON=function(){var e=Object.keys(this.invertedIndex).sort().map((function(e){return[e,this.invertedIndex[e]]}),this),t=Object.keys(this.fieldVectors).map((function(e){return[e,this.fieldVectors[e].toJSON()]}),this);return{version:I.version,fields:this.fields,fieldVectors:t,invertedIndex:e,pipeline:this.pipeline.toJSON()}},I.Index.load=function(e){var t={},r={},n=e.fieldVectors,i=Object.create(null),s=e.invertedIndex,o=new I.TokenSet.Builder,a=I.Pipeline.load(e.pipeline);e.version!=I.version&&I.utils.warn("Version mismatch when loading serialised index. Current version of lunr '"+I.version+"' does not match serialized index '"+e.version+"'");for(var u=0;u<n.length;u++){var l=(h=n[u])[0],c=h[1];r[l]=new I.Vector(c)}for(u=0;u<s.length;u++){var h,d=(h=s[u])[0],f=h[1];o.insert(d),i[d]=f}return o.finish(),t.fields=e.fields,t.fieldVectors=r,t.invertedIndex=i,t.tokenSet=o.root,t.pipeline=a,new I.Index(t)}
/*!
 * lunr.Builder
 * Copyright (C) 2019 Oliver Nightingale
 */,I.Builder=function(){this._ref="id",this._fields=Object.create(null),this._documents=Object.create(null),this.invertedIndex=Object.create(null),this.fieldTermFrequencies={},this.fieldLengths={},this.tokenizer=I.tokenizer,this.pipeline=new I.Pipeline,this.searchPipeline=new I.Pipeline,this.documentCount=0,this._b=.75,this._k1=1.2,this.termIndex=0,this.metadataWhitelist=[]},I.Builder.prototype.ref=function(e){this._ref=e},I.Builder.prototype.field=function(e,t){if(/\//.test(e))throw new RangeError("Field '"+e+"' contains illegal character '/'");this._fields[e]=t||{}},I.Builder.prototype.b=function(e){this._b=e<0?0:e>1?1:e},I.Builder.prototype.k1=function(e){this._k1=e},I.Builder.prototype.add=function(e,t){var r=e[this._ref],n=Object.keys(this._fields);this._documents[r]=t||{},this.documentCount+=1;for(var i=0;i<n.length;i++){var s=n[i],o=this._fields[s].extractor,a=o?o(e):e[s],u=this.tokenizer(a,{fields:[s]}),l=this.pipeline.run(u),c=new I.FieldRef(r,s),h=Object.create(null);this.fieldTermFrequencies[c]=h,this.fieldLengths[c]=0,this.fieldLengths[c]+=l.length;for(var d=0;d<l.length;d++){var f=l[d];if(null==h[f]&&(h[f]=0),h[f]+=1,null==this.invertedIndex[f]){var p=Object.create(null);p._index=this.termIndex,this.termIndex+=1;for(var y=0;y<n.length;y++)p[n[y]]=Object.create(null);this.invertedIndex[f]=p}null==this.invertedIndex[f][s][r]&&(this.invertedIndex[f][s][r]=Object.create(null));for(var m=0;m<this.metadataWhitelist.length;m++){var g=this.metadataWhitelist[m],x=f.metadata[g];null==this.invertedIndex[f][s][r][g]&&(this.invertedIndex[f][s][r][g]=[]),this.invertedIndex[f][s][r][g].push(x)}}}},I.Builder.prototype.calculateAverageFieldLengths=function(){for(var e=Object.keys(this.fieldLengths),t=e.length,r={},n={},i=0;i<t;i++){var s=I.FieldRef.fromString(e[i]),o=s.fieldName;n[o]||(n[o]=0),n[o]+=1,r[o]||(r[o]=0),r[o]+=this.fieldLengths[s]}var a=Object.keys(this._fields);for(i=0;i<a.length;i++){var u=a[i];r[u]=r[u]/n[u]}this.averageFieldLength=r},I.Builder.prototype.createFieldVectors=function(){for(var e={},t=Object.keys(this.fieldTermFrequencies),r=t.length,n=Object.create(null),i=0;i<r;i++){for(var s=I.FieldRef.fromString(t[i]),o=s.fieldName,a=this.fieldLengths[s],u=new I.Vector,l=this.fieldTermFrequencies[s],c=Object.keys(l),h=c.length,d=this._fields[o].boost||1,f=this._documents[s.docRef].boost||1,p=0;p<h;p++){var y,m,g,x=c[p],v=l[x],w=this.invertedIndex[x]._index;void 0===n[x]?(y=I.idf(this.invertedIndex[x],this.documentCount),n[x]=y):y=n[x],m=y*((this._k1+1)*v)/(this._k1*(1-this._b+this._b*(a/this.averageFieldLength[o]))+v),m*=d,m*=f,g=Math.round(1e3*m)/1e3,u.insert(w,g)}e[s]=u}this.fieldVectors=e},I.Builder.prototype.createTokenSet=function(){this.tokenSet=I.TokenSet.fromArray(Object.keys(this.invertedIndex).sort())},I.Builder.prototype.build=function(){return this.calculateAverageFieldLengths(),this.createFieldVectors(),this.createTokenSet(),new I.Index({invertedIndex:this.invertedIndex,fieldVectors:this.fieldVectors,tokenSet:this.tokenSet,fields:Object.keys(this._fields),pipeline:this.searchPipeline})},I.Builder.prototype.use=function(e){var t=Array.prototype.slice.call(arguments,1);t.unshift(this),e.apply(this,t)},I.MatchData=function(e,t,r){for(var n=Object.create(null),i=Object.keys(r||{}),s=0;s<i.length;s++){var o=i[s];n[o]=r[o].slice()}this.metadata=Object.create(null),void 0!==e&&(this.metadata[e]=Object.create(null),this.metadata[e][t]=n)},I.MatchData.prototype.combine=function(e){for(var t=Object.keys(e.metadata),r=0;r<t.length;r++){var n=t[r],i=Object.keys(e.metadata[n]);null==this.metadata[n]&&(this.metadata[n]=Object.create(null));for(var s=0;s<i.length;s++){var o=i[s],a=Object.keys(e.metadata[n][o]);null==this.metadata[n][o]&&(this.metadata[n][o]=Object.create(null));for(var u=0;u<a.length;u++){var l=a[u];null==this.metadata[n][o][l]?this.metadata[n][o][l]=e.metadata[n][o][l]:this.metadata[n][o][l]=this.metadata[n][o][l].concat(e.metadata[n][o][l])}}}},I.MatchData.prototype.add=function(e,t,r){if(!(e in this.metadata))return this.metadata[e]=Object.create(null),void(this.metadata[e][t]=r);if(t in this.metadata[e])for(var n=Object.keys(r),i=0;i<n.length;i++){var s=n[i];s in this.metadata[e][t]?this.metadata[e][t][s]=this.metadata[e][t][s].concat(r[s]):this.metadata[e][t][s]=r[s]}else this.metadata[e][t]=r},I.Query=function(e){this.clauses=[],this.allFields=e},I.Query.wildcard=new String("*"),I.Query.wildcard.NONE=0,I.Query.wildcard.LEADING=1,I.Query.wildcard.TRAILING=2,I.Query.presence={OPTIONAL:1,REQUIRED:2,PROHIBITED:3},I.Query.prototype.clause=function(e){return"fields"in e||(e.fields=this.allFields),"boost"in e||(e.boost=1),"usePipeline"in e||(e.usePipeline=!0),"wildcard"in e||(e.wildcard=I.Query.wildcard.NONE),e.wildcard&I.Query.wildcard.LEADING&&e.term.charAt(0)!=I.Query.wildcard&&(e.term="*"+e.term),e.wildcard&I.Query.wildcard.TRAILING&&e.term.slice(-1)!=I.Query.wildcard&&(e.term=e.term+"*"),"presence"in e||(e.presence=I.Query.presence.OPTIONAL),this.clauses.push(e),this},I.Query.prototype.isNegated=function(){for(var e=0;e<this.clauses.length;e++)if(this.clauses[e].presence!=I.Query.presence.PROHIBITED)return!1;return!0},I.Query.prototype.term=function(e,t){if(Array.isArray(e))return e.forEach((function(e){this.term(e,I.utils.clone(t))}),this),this;var r=t||{};return r.term=e.toString(),this.clause(r),this},I.QueryParseError=function(e,t,r){this.name="QueryParseError",this.message=e,this.start=t,this.end=r},I.QueryParseError.prototype=new Error,I.QueryLexer=function(e){this.lexemes=[],this.str=e,this.length=e.length,this.pos=0,this.start=0,this.escapeCharPositions=[]},I.QueryLexer.prototype.run=function(){for(var e=I.QueryLexer.lexText;e;)e=e(this)},I.QueryLexer.prototype.sliceString=function(){for(var e=[],t=this.start,r=this.pos,n=0;n<this.escapeCharPositions.length;n++)r=this.escapeCharPositions[n],e.push(this.str.slice(t,r)),t=r+1;return e.push(this.str.slice(t,this.pos)),this.escapeCharPositions.length=0,e.join("")},I.QueryLexer.prototype.emit=function(e){this.lexemes.push({type:e,str:this.sliceString(),start:this.start,end:this.pos}),this.start=this.pos},I.QueryLexer.prototype.escapeCharacter=function(){this.escapeCharPositions.push(this.pos-1),this.pos+=1},I.QueryLexer.prototype.next=function(){if(this.pos>=this.length)return I.QueryLexer.EOS;var e=this.str.charAt(this.pos);return this.pos+=1,e},I.QueryLexer.prototype.width=function(){return this.pos-this.start},I.QueryLexer.prototype.ignore=function(){this.start==this.pos&&(this.pos+=1),this.start=this.pos},I.QueryLexer.prototype.backup=function(){this.pos-=1},I.QueryLexer.prototype.acceptDigitRun=function(){var e,t;do{t=(e=this.next()).charCodeAt(0)}while(t>47&&t<58);e!=I.QueryLexer.EOS&&this.backup()},I.QueryLexer.prototype.more=function(){return this.pos<this.length},I.QueryLexer.EOS="EOS",I.QueryLexer.FIELD="FIELD",I.QueryLexer.TERM="TERM",I.QueryLexer.EDIT_DISTANCE="EDIT_DISTANCE",I.QueryLexer.BOOST="BOOST",I.QueryLexer.PRESENCE="PRESENCE",I.QueryLexer.lexField=function(e){return e.backup(),e.emit(I.QueryLexer.FIELD),e.ignore(),I.QueryLexer.lexText},I.QueryLexer.lexTerm=function(e){if(e.width()>1&&(e.backup(),e.emit(I.QueryLexer.TERM)),e.ignore(),e.more())return I.QueryLexer.lexText},I.QueryLexer.lexEditDistance=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(I.QueryLexer.EDIT_DISTANCE),I.QueryLexer.lexText},I.QueryLexer.lexBoost=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(I.QueryLexer.BOOST),I.QueryLexer.lexText},I.QueryLexer.lexEOS=function(e){e.width()>0&&e.emit(I.QueryLexer.TERM)},I.QueryLexer.termSeparator=I.tokenizer.separator,I.QueryLexer.lexText=function(e){for(;;){var t=e.next();if(t==I.QueryLexer.EOS)return I.QueryLexer.lexEOS;if(92!=t.charCodeAt(0)){if(":"==t)return I.QueryLexer.lexField;if("~"==t)return e.backup(),e.width()>0&&e.emit(I.QueryLexer.TERM),I.QueryLexer.lexEditDistance;if("^"==t)return e.backup(),e.width()>0&&e.emit(I.QueryLexer.TERM),I.QueryLexer.lexBoost;if("+"==t&&1===e.width())return e.emit(I.QueryLexer.PRESENCE),I.QueryLexer.lexText;if("-"==t&&1===e.width())return e.emit(I.QueryLexer.PRESENCE),I.QueryLexer.lexText;if(t.match(I.QueryLexer.termSeparator))return I.QueryLexer.lexTerm}else e.escapeCharacter()}},I.QueryParser=function(e,t){this.lexer=new I.QueryLexer(e),this.query=t,this.currentClause={},this.lexemeIdx=0},I.QueryParser.prototype.parse=function(){this.lexer.run(),this.lexemes=this.lexer.lexemes;for(var e=I.QueryParser.parseClause;e;)e=e(this);return this.query},I.QueryParser.prototype.peekLexeme=function(){return this.lexemes[this.lexemeIdx]},I.QueryParser.prototype.consumeLexeme=function(){var e=this.peekLexeme();return this.lexemeIdx+=1,e},I.QueryParser.prototype.nextClause=function(){var e=this.currentClause;this.query.clause(e),this.currentClause={}},I.QueryParser.parseClause=function(e){var t=e.peekLexeme();if(null!=t)switch(t.type){case I.QueryLexer.PRESENCE:return I.QueryParser.parsePresence;case I.QueryLexer.FIELD:return I.QueryParser.parseField;case I.QueryLexer.TERM:return I.QueryParser.parseTerm;default:var r="expected either a field or a term, found "+t.type;throw t.str.length>=1&&(r+=" with value '"+t.str+"'"),new I.QueryParseError(r,t.start,t.end)}},I.QueryParser.parsePresence=function(e){var t=e.consumeLexeme();if(null!=t){switch(t.str){case"-":e.currentClause.presence=I.Query.presence.PROHIBITED;break;case"+":e.currentClause.presence=I.Query.presence.REQUIRED;break;default:var r="unrecognised presence operator'"+t.str+"'";throw new I.QueryParseError(r,t.start,t.end)}var n=e.peekLexeme();if(null==n){r="expecting term or field, found nothing";throw new I.QueryParseError(r,t.start,t.end)}switch(n.type){case I.QueryLexer.FIELD:return I.QueryParser.parseField;case I.QueryLexer.TERM:return I.QueryParser.parseTerm;default:r="expecting term or field, found '"+n.type+"'";throw new I.QueryParseError(r,n.start,n.end)}}},I.QueryParser.parseField=function(e){var t=e.consumeLexeme();if(null!=t){if(-1==e.query.allFields.indexOf(t.str)){var r=e.query.allFields.map((function(e){return"'"+e+"'"})).join(", "),n="unrecognised field '"+t.str+"', possible fields: "+r;throw new I.QueryParseError(n,t.start,t.end)}e.currentClause.fields=[t.str];var i=e.peekLexeme();if(null==i){n="expecting term, found nothing";throw new I.QueryParseError(n,t.start,t.end)}switch(i.type){case I.QueryLexer.TERM:return I.QueryParser.parseTerm;default:n="expecting term, found '"+i.type+"'";throw new I.QueryParseError(n,i.start,i.end)}}},I.QueryParser.parseTerm=function(e){var t=e.consumeLexeme();if(null!=t){e.currentClause.term=t.str.toLowerCase(),-1!=t.str.indexOf("*")&&(e.currentClause.usePipeline=!1);var r=e.peekLexeme();if(null!=r)switch(r.type){case I.QueryLexer.TERM:return e.nextClause(),I.QueryParser.parseTerm;case I.QueryLexer.FIELD:return e.nextClause(),I.QueryParser.parseField;case I.QueryLexer.EDIT_DISTANCE:return I.QueryParser.parseEditDistance;case I.QueryLexer.BOOST:return I.QueryParser.parseBoost;case I.QueryLexer.PRESENCE:return e.nextClause(),I.QueryParser.parsePresence;default:var n="Unexpected lexeme type '"+r.type+"'";throw new I.QueryParseError(n,r.start,r.end)}else e.nextClause()}},I.QueryParser.parseEditDistance=function(e){var t=e.consumeLexeme();if(null!=t){var r=parseInt(t.str,10);if(isNaN(r)){var n="edit distance must be numeric";throw new I.QueryParseError(n,t.start,t.end)}e.currentClause.editDistance=r;var i=e.peekLexeme();if(null!=i)switch(i.type){case I.QueryLexer.TERM:return e.nextClause(),I.QueryParser.parseTerm;case I.QueryLexer.FIELD:return e.nextClause(),I.QueryParser.parseField;case I.QueryLexer.EDIT_DISTANCE:return I.QueryParser.parseEditDistance;case I.QueryLexer.BOOST:return I.QueryParser.parseBoost;case I.QueryLexer.PRESENCE:return e.nextClause(),I.QueryParser.parsePresence;default:n="Unexpected lexeme type '"+i.type+"'";throw new I.QueryParseError(n,i.start,i.end)}else e.nextClause()}},I.QueryParser.parseBoost=function(e){var t=e.consumeLexeme();if(null!=t){var r=parseInt(t.str,10);if(isNaN(r)){var n="boost must be numeric";throw new I.QueryParseError(n,t.start,t.end)}e.currentClause.boost=r;var i=e.peekLexeme();if(null!=i)switch(i.type){case I.QueryLexer.TERM:return e.nextClause(),I.QueryParser.parseTerm;case I.QueryLexer.FIELD:return e.nextClause(),I.QueryParser.parseField;case I.QueryLexer.EDIT_DISTANCE:return I.QueryParser.parseEditDistance;case I.QueryLexer.BOOST:return I.QueryParser.parseBoost;case I.QueryLexer.PRESENCE:return e.nextClause(),I.QueryParser.parsePresence;default:n="Unexpected lexeme type '"+i.type+"'";throw new I.QueryParseError(n,i.start,i.end)}else e.nextClause()}},void 0===(i="function"==typeof(n=function(){return I})?n.call(t,r,t,e):n)||(e.exports=i)}()},function(e,t,r){"use strict";r.r(t),r.d(t,"handler",(function(){return h}));var n=function(){return(n=Object.assign||function(e){for(var t,r=1,n=arguments.length;r<n;r++)for(var i in t=arguments[r])Object.prototype.hasOwnProperty.call(t,i)&&(e[i]=t[i]);return e}).apply(this,arguments)};function i(e){var t="function"==typeof Symbol&&Symbol.iterator,r=t&&e[t],n=0;if(r)return r.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&n>=e.length&&(e=void 0),{value:e&&e[n++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")}function s(e,t){var r="function"==typeof Symbol&&e[Symbol.iterator];if(!r)return e;var n,i,s=r.call(e),o=[];try{for(;(void 0===t||t-- >0)&&!(n=s.next()).done;)o.push(n.value)}catch(e){i={error:e}}finally{try{n&&!n.done&&(r=s.return)&&r.call(s)}finally{if(i)throw i.error}}return o}function o(){for(var e=[],t=0;t<arguments.length;t++)e=e.concat(s(arguments[t]));return e}r(1);var a=r(0);var u,l,c=function(){function e(e){var t=e.config,r=e.docs,u=e.pipeline,l=e.index;this.documents=function(e){var t,r,n=new Map;try{for(var o=i(e),u=o.next();!u.done;u=o.next()){var l=u.value,c=s(l.location.split("#"),2),h=c[0],d=c[1],f=l.location,p=l.title,y=a(l.text).replace(/\s+(?=[,.:;!?])/g,"").replace(/\s+/g," ");if(d){var m=n.get(h);m.linked?n.set(f,{location:f,title:p,text:y,parent:m}):(m.title=l.title,m.text=y,m.linked=!0)}else 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e.error}}1===t.lang.length&&"en"!==t.lang[0]?this.use(lunr[t.lang[0]]):t.lang.length>1&&this.use((s=lunr).multiLanguage.apply(s,o(t.lang))),this.field("title",{boost:1e3}),this.field("text"),this.ref("location");try{for(var f=i(r),p=f.next();!p.done;p=f.next()){var y=p.value;this.add(y)}}catch(e){a={error:e}}finally{try{p&&!p.done&&(l=f.return)&&l.call(f)}finally{if(a)throw a.error}}})):lunr.Index.load("string"==typeof l?JSON.parse(l):l)}return e.prototype.query=function(e){var t=this;if(e)try{var r=this.index.search(e).reduce((function(e,r){var n=t.documents.get(r.ref);if(void 0!==n)if("parent"in n){var i=n.parent.location;e.set(i,o(e.get(i)||[],[r]))}else{i=n.location;e.set(i,e.get(i)||[])}return e}),new Map),n=this.highlight(e);return o(r).map((function(e){var r=s(e,2),i=r[0],o=r[1];return{article:n(t.documents.get(i)),sections:o.map((function(e){return n(t.documents.get(e.ref))}))}}))}catch(t){console.warn("Invalid query: "+e+" – see https://bit.ly/2s3ChXG")}return[]},e}();function 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